Add-ons
Calendar and Date/Time
Sort by:
GCalTab
GCalTab is a Thunderbird add-on that opens Google Calendar website in a Thunderbird tab. It features a beautiful dark mode thanks to the DarkReader algorithm.
Macro Template
Macro Template is to replace mail templates with macros for date formatting.
Mahour-Iranian-Date
This add-on adds a new column called "تاریخ" ("Date (Persian)" since V1.1.3) in message list containing Iranian Date.
It is reimplementation of Iranian date for Thunderbird 78. The source is based on Full address column by Łukasz Kosson.
Send Later
Provider for CalDAV & CardDAV
This extension adds support for CalDAV & CardDAV accounts to the Thunderbird Sync manager "TbSync". Including iCloud, ownCloud, Nextcloud, Radicale and many more.
TbSync
TbSync is a central user interface to manage cloud accounts and synchronize their contact, task and calendar information with Thunderbird.
More Snooze
This add allow to customize the snooze delay when snooze popup appears (lightning required).
marked-lightning
Extension for Lightning: Allows the use of Markdown in Task descriptions and renders them as HTML in the TaskView.
Provider for Exchange ActiveSync
Add sync support for Exchange ActiveSync (EAS v2.5 & v14.0) accounts to TbSync
Proton Calendar Toolbar Button
Adds a Proton Calendar button to the toolbar. The button simply opens a new tab with the https://calendar.proton.me webpage.
Birthday Calendar
Show Calendar Week
Requires Restart
Shows the calendar week Thunderbird/Lightning calendar's moth and multi-week view.
G Suite in tab
Now you can open G Suite App in Thunderbird tabs. (Calendar, Contacts, Keep, Task and Drive)
Gantt View
Enhanced Date Formatter
Requires Restart
Configure the 'Date' and 'Received' columns and displayed date in the message pane using custom formats. You can even use different date formats for emails with today's date, yesterday's date, dates in the last week, or dates older than a week.
AdvancedTasks
Requires Restart
Thunderbirds Lightning Extension: Allows the use of Markdown in Task descriptions and renders them as HTML in the TaskView.
Reply Monitor
Requires Restart
**This is NOT COMPATIBLE with Thunderbird 31 or newer versions**
Keep track of your emails and replies (Lightning is required).
Note: the name of this add-on has been changed to Reply Monitor because the previous name is a registered trademark.
Open Google Calendar
Adds the Google Calendar web interface in a new Thunderbird tab. Creating and viewing events works like in a browser (Firefox, Chrome, ...)
To create your own collections, you must have a Mozilla Add-ons account.
